{
  "abstract": "Free-electron-based nanoscopy enables the study of optical excitations in materials with deep-subwavelength spatial resolution, with cathodoluminescence (CL) being one of the most useful resulting signals. When combined with an optical collection system, CL measurements can access multidimensional information of light; yet the phase of the emitted optical fields has remained largely elusive. Here, we demonstrate a reference-free phase retrieval approach for far-field CL wavefronts using the Gerchberg-Saxton algorithm implemented with real-space and angular-space CL intensity data. Applying this approach to representative nanostructures, including a planar surface, nanosphere, plasmonic crystal, and nanowire, we reconstruct distinct phase distributions that reveal their underlying radiation mechanisms. This reference-free framework offers a robust and flexible route for retrieving the phase of electron-beam-excited optical fields without relying on a reference wave, making it readily extendable to a wide range of nanostructures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.21944",
  "author_total": 3,
  "authors": [
    {
      "name": "Izzah Machfuudzoh"
    },
    {
      "name": "Ryoichi Horisaki"
    },
    {
      "name": "Takumi Sannomiya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9mca590mdw95w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.21944",
  "fulltext_url": null,
  "id": "9mca590mdw95w",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.21944",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.21944",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9mca590mdw95w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:18Z",
      "native_id": "2605.21944",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.21944"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Cathodoluminescence Wavefront Retrieval",
  "title_text": "Cathodoluminescence Wavefront Retrieval",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:18Z",
  "url": "https://research.draconitic.com/paper/9mca590mdw95w",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1021/acs.nanolett.6c03354",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}